pacer apcer pcaer cpaer acper caper paecr apecr peacr epacr aepcr eapcr pcear cpear pecar epcar cepar ecpar acepr caepr aecpr eacpr ceapr ecapr pacre apcre pcare cpare acpre capre parce aprce prace rpace arpce rapce pcrae cprae prcae rpcae crpae rcpae acrpe carpe arcpe racpe crape rcape paerc aperc pearc eparc aeprc eaprc parec aprec praec rpaec arpec rapec perac eprac preac rpeac erpac repac aerpc earpc arepc raepc erapc reapc pcera cpera pecra epcra cepra ecpra pcrea cprea prcea rpcea crpea rcpea perca eprca preca rpeca erpca repca cerpa ecrpa crepa rcepa ercpa recpa acerp caerp aecrp eacrp cearp ecarp acrep carep arcep racep craep rcaep aercp earcp arecp raecp eracp reacp cerap ecrap creap rceap ercap recap
Note: these 'words' (valid or invalid) are all the permutations of the word pacer. These words are obtained by scrambling the letters in pacer.